package controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import pojo.Student;
import service.StudentService;

import utils.Page;

import java.util.List;
@Controller
@RequestMapping("/student")
public class StudentController {
    @Autowired
    private StudentService studentServicer;

    //全查询
    @RequestMapping("/list/{currentPage}")

    private String list(Student student, @PathVariable("currentPage") Integer currentPage, Model model) {
        //查询数据
        Page page = new Page();
        int totalcount = studentServicer.count(student);
        page.setTotalCount(totalcount);
        page.setCurrentPage(currentPage);
        page.setTotalPage();
        //计算偏移量
        int offset = (currentPage - 1) * page.getPageSize();
        List<Student>students = studentServicer.findAll(student, offset, page.getPageSize());
        //数据返回
        model.addAttribute("students", students);
        model.addAttribute("page", page);
        model.addAttribute("student", student);

        return "student/list";
    }

    @RequestMapping("/toAdd")
    public String toAdd() {
        return "student/add";
    }

    @RequestMapping("/addSave")
    public String addSave(Student student) {
        int result = studentServicer.addStudent(student);
        if (result > 0) {
            return "redirect:/student/list/1";
        }else {
            return "student/add";
        }
    }
    @RequestMapping("/delete/{sId}")
    public String deleteById(@PathVariable("sId") Integer sId){
        int result = studentServicer.deleteStudentById(sId);
        return result>0?"redirect:/student/list/1":"error";
    }
    @RequestMapping("/toupdate/{sId}")
    public String toUpdate(@PathVariable("sId") Integer sId,Model model) {
        Student student = studentServicer.findStudentById(sId);
        model.addAttribute("student",student);
        return "student/update";
    }

    @RequestMapping("/updateSave")
    public String updateSave(Student student) {
        int result = studentServicer.updateStudent(student);
        if (result > 0) {
            return "redirect:/student/list/1";
        }else {
            return "student/update";
        }
    }
}
